Inverse Kinematics for Reduced Deformable Models

Articulated shapes are aptly described by reduced deformable models
that express required shape deformations using a compact set of
control parameters. Although sufficient to describe most shape deformations,
these control parameters can be ill-suited for animation
tasks, particularly when reduced deformable models are inferred
automatically from example shapes. Our algorithm provides intuitive
and direct control of reduced deformable models similar to
a conventional inverse-kinematics algorithm for jointed rigid structures.
We present a fully automated pipeline that transforms a set of
unarticulated example shapes into a controllable, articulated model.
With only a few manipulations, an animator can automatically and
interactively pose detailed shapes at rates independent of their geometric
complexity.